Radiator ventilator



Feb. 13, 1923.

M. E. RAYMOND.

RADIATOR VENTILATOR.

2 SHEES-SHEET l.

FILED FEB. I6, |920.

Feb., 18, 1923.,

Mld-5,354.

lVi. E. RAYMOND.

RADIATOR VENTILATOR.

2 SHEETS-SHEET 2r FILED FEB.16, 1920.

. WMM,

Patented lFelb. i3, i923.

NETE@ earear estanca,

MEIJVIN E. RAYMOND, OF CHICAGO, ILLINOIS, ASSIGNOR T0 RIGHT MANUFACTURING COMPANY, 0F LOUISVILLE, KENTUCKY.

RADIATOR VENTILATOR.

Application led February 16, 1920. Serial No. 358,931.

To all whom it may concern.'

Be it known that I, MELVIN E. RAYMOND, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Radiator Ventilators, of which the following is a specification.

rihis invention has. relation to self propelled vehicles and refers particularly to engine cooling apparatus for such vehicles. Only water cooled engines are hereinafter considered, and in such engines two types of cooling apparatus are commonly used for the purpose of maintaining a constant circulation of the cooling medium aroundthe engine and through the radiator. One type of cooling apparatus is operated yby a power driven pump, the other, called the thermo- Siphon system, to which this invention is more particularly directed, depends entirely upon the temperature variation 1n the cooling medium at the top and at the bottom of the system.

Ordinarily the thermo-Siphon system functions satisfactorily, and only extremes of atmospheric temperature operate to retard or stop the circulation of the cooling medium. Particular stress has been laid upon the` production of hot weather apparatus,y and well filled radiators are not very commonly found to boil over even in extremely hot weather. In cold weather,however, when the temperature is well below the freezing point, conditions are quite dierent, because a`ll agencies combine to cool the engine and cooling medium so rapidly that ,circulation becomes retarded, and this in turn usually results in a `frozen radiator. When the vehicle is not in motion it is, of course, a comparatively simple matter to cover the engine and radiator, but when in motion it is quite diiiicult to prevent radiator troubles. Various devices have reached the market, each purporting to function 'perfectly, but no such resultshave hitherto been attained.k Besides such devices either are cumbersome, noisy and apt to get out of order, or else they are ma e of material incapable of withstanding the attacks of the elements. ,Y Y

With the aforenamed conditions in view the primary object of this invention is the provision of a simple and inexpensive structure 'so perfectly calculated and proportioned as to protect a radiator against exconsists of a sheet of strong,

c-essive cooling and subsequent freezing. A further object is to provide a structure readily attaehable to the front of a vehicle radiator without in any way disturbing the radlator. Another object is the provision of a strong and lasting device capable of withstanding repeated attacherV its and removals, and practically impervious to the weather.

Hereinafter is described a device embodying the invention, in its relation to an engine and its radiator, and the various-features of the invention are clearly illustrated in the appended drawings, of which:

Fig. l is a front elevation of a radiator embodying the invention,

F ig. 2 shows, in side elevation, portions of a vehicle engine, its radiator and connections,

Fig. 3 illustrates the structure of my invention removed from the vehicle, and

Fig. 4 is a side elevation of the structure.'

rlhe structure, detached from the radiator, flexible metal 1, such as cold rolled steel or the like, and the method of attaching it is extremely simple. It is only necessary to place the structure against t-he front of the radiator core 2, and

`to push it upward-so as to cause the top edge la to slide under the edge. 3e of the radiator casing 3. v This upward movement is continued until the bottom edge lb clears the casing edge 3", and the structure is then forced downward behind the said edge 35 until arrested by a plurality of'clips 1. The Width of the structure corresponds to the width of the openin in the radiator casing, and consequently t e side edges 1d, 3d substantially coincide. It is noted that recesses 1 are cut in the corners of the struc-` ture, and this is done in order to facilitate the insertion of the structure behind the radiator casing, which latter ordinarily tits so tightly `over the radiator that considerable pressure is required in order to insert the structure. The said clips are preferably extruded from the body of the structure, and they are properly shaped to slip readily over the casing edge 3b and to exert pressure against the said casing in order to maintain the structure firmly in place. R g It is observed that the face of the structure, as it appears when attached to the radiator l(see ig. ll), is' divided into four parts or' zones. The bottom zone l1 is eutirely solid, the second vzone 1g is provided ice" ital

i have brought with perforations gradually increasing in width, the third zone lh has air passages of even greater width, and the top zone is practically open, only sufficient metal remalning to support the top edge l. The reason for this arrangement will now be explained. The radiator cannot remain uncovered in cold weather, or it will freeze. It will not do to cover it entirely, while the engine`is running, or it will boil. The cooling medium enters the radiator' at the top, and here the structure is open in order to admit cold air in sufficient quantity to efi'ect the greater portion of temperature reduction required to maintain proper circulation. Now it is noted that the passages, or louvers, third zone slant inwardly and upwardly, and the purpose of this construction is to ferce as much as possible of the incoming cold air from the third zone into the fourth. The shorter louvers 1k of the second zone arel added in order to insure complete radiation whenever the struc-ture is used. Cold air will sink rapidly, and were it not for this arrangement, sufficient cold air would sink into the first zone to freeze the radiator bottom in extremely cold weather, hence also the decrease of louver widths toward the solid first zone. Y

Careful experimentation and analysis out the above mentioned facts, and the structure evolved does perform the function of maintaining circulation 1nd aids materially in preventing radiator bottom freezing. If, however, the temperature rises well' above the freezing point conditions. bccomeientirely changed, and it becomes necessary rto expose theentire radiator front in order, to ermit of sufficient radiation to keep the radlator from boiling and thus also retarding the circulation. Temperature changes are in some parts sorapid and so violent that the change may take place while the vehicle is in service, in which case it becomes necessary to remove the structure bodily, and this, of course, is readily and quickly accomplished by the operator of the vehicle without skill or tools, as hereinbefore explained.

I am aware that radiator protectors and circulation regulators of various forms have been devised, but I have not found a device, made in one weather resisting piece, attachable and removable without disturbing or removing any portion of the vehicle, and without the use of tools, and having air passages placed and proportioned so as to function correctly.

I clain: I, i

l, 'A radiator ventilator comprising a at one piece sheet metal structure, the top edge of which is shaped'for insertion between a radiator casing and its core without separatof the A ing the two, and having at its bottom integrally formed clips shaped to engage the lower edge of said casing and to prevent the structure from dropping out of engagement.

2. A radiation regulator comprising a onepiece structure having air passages. said structure being shaped for insertion between the radiator casing and core` and having clips for support on the said casing.

3. A radiator, a casing for the said radiator, a structure capable of insertion between the radiator and casing without separating the two, said structure being substantially7 open at the top and having gradually decreasing air passages toward its solid bottom. c

4:. The combination with a radiator and its casing, of a ventilating structure shaped to cover the front of the said radiator, said structure having its upper and lower edges capable of insertion between the radiator and casing and provided with supporting clips engaging the 'said casing.

A one-piece sheet metal structure insertable between a radiator casing and core, said structure comprising a lower solid ouequartcr portion, acenter one-half portion provided with louvers of increasing width. and a top one-quarter portion substantially open.

6. A structure insert-able between the radiator and its casing without separating the two and having clips engaging the said casing, said structure open at top and having upwardly and inwardly directed` passages leading air to the radiator coredirectly behind the open top, the said passages decreasing in size toward the solid bottom portion of the structure.

7. As an article of manufacture a piece of sheet metal shaped for insertion between a radiator core and its casing without separating the two, provided with bottom clips formed out of the metal so as to provide a supporting channel fitting over the edge of said casing, and having apertures starting about one third from the bottom and increasing in size to the substantially open top.

8. A one-piece structure insertable between .the casing and core of a radiator without separating the two, said structure divided, into four substantially equal horizontal zones, the bottom zone being entirely closed, the second zone having two vertical series of short louvers increasing in length toward the top, the third zone having a series of louvers substantially the full width of the structure, and the top z'one being substantially entirely open.

Intestimony whereof I have hereunto aiiixed my signature.

MELVIN E. RAYMOND. 

